Theme support for the extension shelf

chrome/browser/views/detachable_toolbar_view.cc

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/views/detachable_toolbar_view.h"
+
+#include "app/gfx/canvas.h"
+#include "chrome/browser/browser_theme_provider.h"
+#include "grit/theme_resources.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+// How round the 'new tab' style bookmarks bar is.
+static const int kNewtabBarRoundness = 5;
+
+// static
+void DetachableToolbarView::PaintBackgroundDetachedMode(gfx::Canvas* canvas,
+                                                        views::View* view) {
+  int browser_height = view->GetParent()->GetBounds(
+      views::View::APPLY_MIRRORING_TRANSFORMATION).height();
+
+  // Draw the background to match the new tab page.
+  ThemeProvider* tp = view->GetThemeProvider();
+  canvas->FillRectInt(tp->GetColor(BrowserThemeProvider::COLOR_NTP_BACKGROUND),
+                      0, 0, view->width(), view->height());
+
+  if (tp->HasCustomImage(IDR_THEME_NTP_BACKGROUND)) {
+    int tiling = BrowserThemeProvider::NO_REPEAT;
+    tp->GetDisplayProperty(BrowserThemeProvider::NTP_BACKGROUND_TILING,
+                           &tiling);
+    int alignment;
+    if (tp->GetDisplayProperty(BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT,
+        &alignment)) {
+      SkBitmap* ntp_background = tp->GetBitmapNamed(IDR_THEME_NTP_BACKGROUND);
+
+      if (alignment & BrowserThemeProvider::ALIGN_TOP) {
+        PaintThemeBackgroundTopAligned(
+            canvas, ntp_background, tiling, alignment,
+            view->width(), view->height());
+      } else {
+        PaintThemeBackgroundBottomAligned(
+            canvas, ntp_background, tiling, alignment,
+            view->width(), view->height(), browser_height);
+      }
+    }
+  }
+}
+
+// static
+void DetachableToolbarView::PaintBackgroundAttachedMode(gfx::Canvas* canvas,
+                                                        views::View* view) {
+  gfx::Rect bounds =
+      view->GetBounds(views::View::APPLY_MIRRORING_TRANSFORMATION);
+
+  ThemeProvider* tp = view->GetThemeProvider();
+  SkColor theme_toolbar_color =
+      tp->GetColor(BrowserThemeProvider::COLOR_TOOLBAR);
+  canvas->FillRectInt(theme_toolbar_color, 0, 0,
+                      view->width(), view->height());
+
+  canvas->TileImageInt(*tp->GetBitmapNamed(IDR_THEME_TOOLBAR),
+      view->GetParent()->GetBounds(
+      views::View::APPLY_MIRRORING_TRANSFORMATION).x() + bounds.x(),
+      bounds.y(), 0, 0, view->width(), view->height());
+}
+
+// static
+void DetachableToolbarView::CalculateContentArea(
+    double animation_state, double horizontal_padding,
+    double vertical_padding, SkRect* rect,
+    double* roundness, views::View* view) {
+  // The 0.5 is to correct for Skia's "draw on pixel boundaries"ness.
+  rect->set(SkDoubleToScalar(horizontal_padding - 0.5),
+           SkDoubleToScalar(vertical_padding - 0.5),
+           SkDoubleToScalar(view->width() - horizontal_padding - 0.5),
+           SkDoubleToScalar(view->height() - vertical_padding - 0.5));
+
+  *roundness = static_cast<double>(kNewtabBarRoundness) * animation_state;
+}
+
+// static
+void DetachableToolbarView::PaintHorizontalBorder(gfx::Canvas* canvas,
+                                                  DetachableToolbarView* view) {
+  // Border can be at the top or at the bottom of the view depending on whether
+  // the view (bar/shelf) is at the top/at the bottom and whether it is attached
+  // or detached.
+  int y = view->IsOnTop() == !view->IsDetached() ? view->height() - 1 : 0;
+  canvas->FillRectInt(ResourceBundle::toolbar_separator_color,
+      0, y, view->width(), 1);
+}
+
+// static
+void DetachableToolbarView::PaintContentAreaBackground(
+    gfx::Canvas* canvas, ThemeProvider* theme_provider,
+    const SkRect& rect, double roundness) {
+  SkPaint paint;
+  paint.setAntiAlias(true);
+  paint.setColor(theme_provider->GetColor(BrowserThemeProvider::COLOR_TOOLBAR));
+
+  canvas->drawRoundRect(
+      rect, SkDoubleToScalar(roundness), SkDoubleToScalar(roundness), paint);
+}
+
+// static
+void DetachableToolbarView::PaintContentAreaBorder(
+    gfx::Canvas* canvas, ThemeProvider* theme_provider,
+    const SkRect& rect, double roundness) {
+  SkPaint border_paint;
+  border_paint.setColor(
+      theme_provider->GetColor(BrowserThemeProvider::COLOR_NTP_HEADER));
+  border_paint.setStyle(SkPaint::kStroke_Style);
+  border_paint.setAlpha(96);
+  border_paint.setAntiAlias(true);
+
+  canvas->drawRoundRect(rect,
+                        SkDoubleToScalar(roundness),
+                        SkDoubleToScalar(roundness), border_paint);
+}
+
+// static
+void DetachableToolbarView::PaintVerticalDivider(
+    gfx::Canvas* canvas, int x, int height, int vertical_padding,
+    const SkColor& top_color,
+    const SkColor& middle_color,
+    const SkColor& bottom_color) {
+  // Draw the upper half of the divider.
+  SkPaint paint;
+  paint.setShader(skia::CreateGradientShader(vertical_padding + 1,
+                                             height / 2,
+                                             top_color,
+                                             middle_color))->safeUnref();
+  SkRect rc = { SkIntToScalar(x),
+                SkIntToScalar(vertical_padding + 1),
+                SkIntToScalar(x + 1),
+                SkIntToScalar(height / 2) };
+  canvas->drawRect(rc, paint);
+
+  // Draw the lower half of the divider.
+  SkPaint paint_down;
+  paint_down.setShader(skia::CreateGradientShader(height / 2,
+                                                  height - vertical_padding,
+                                                  middle_color,
+                                                  bottom_color))->safeUnref();
+  SkRect rc_down = { SkIntToScalar(x),
+                     SkIntToScalar(height / 2),
+                     SkIntToScalar(x + 1),
+                     SkIntToScalar(height - vertical_padding) };
+  canvas->drawRect(rc_down, paint_down);
+}
+
+// static
+void DetachableToolbarView::PaintThemeBackgroundTopAligned(
+    gfx::Canvas* canvas, SkBitmap* ntp_background, int tiling, int alignment,
+    int width, int height) {
+  if (alignment & BrowserThemeProvider::ALIGN_LEFT) {
+    if (tiling == BrowserThemeProvider::REPEAT) {
+      canvas->TileImageInt(*ntp_background, 0, 0, width, height);
+    } else if (tiling == BrowserThemeProvider::REPEAT_X) {
+      canvas->TileImageInt(*ntp_background, 0, 0, width,
+                           ntp_background->height());
+    } else {
+      canvas->TileImageInt(*ntp_background, 0, 0,
+                           ntp_background->width(), ntp_background->height());
+    }
+  } else if (alignment & BrowserThemeProvider::ALIGN_RIGHT) {
+    int x_pos = width % ntp_background->width() - ntp_background->width();
+    if (tiling == BrowserThemeProvider::REPEAT) {
+      canvas->TileImageInt(*ntp_background, x_pos, 0,
+                           width + ntp_background->width(), height);
+    } else if (tiling == BrowserThemeProvider::REPEAT_X) {
+      canvas->TileImageInt(*ntp_background, x_pos,
+          0, width + ntp_background->width(), ntp_background->height());
+    } else {
+      canvas->TileImageInt(*ntp_background, width - ntp_background->width(),
+          0, ntp_background->width(), ntp_background->height());
+    }
+  } else {  // ALIGN == CENTER
+    int x_pos = width > ntp_background->width() ?
+                ((width / 2 - ntp_background->width() / 2) %
+                    ntp_background->width()) - ntp_background->width() :
+                width / 2 - ntp_background->width() / 2;
+    if (tiling == BrowserThemeProvider::REPEAT) {
+      canvas->TileImageInt(*ntp_background, x_pos, 0,
+                           width + ntp_background->width(), height);
+    } else if (tiling == BrowserThemeProvider::REPEAT_X) {
+      canvas->TileImageInt(*ntp_background, x_pos, 0,
+                           width + ntp_background->width(),
+                           ntp_background->height());
+    } else {
+     canvas->TileImageInt(*ntp_background,
+                          width / 2 - ntp_background->width() / 2,
+                          0, ntp_background->width(), ntp_background->height());
+    }
+  }
+}
+
+// static
+void DetachableToolbarView::PaintThemeBackgroundBottomAligned(
+    gfx::Canvas* canvas, SkBitmap* ntp_background, int tiling, int alignment,
+    int width, int height, int browser_height) {
+  int border_width = 5;
+  int y_pos = ((tiling == BrowserThemeProvider::REPEAT_X) ||
+              (tiling == BrowserThemeProvider::NO_REPEAT)) ?
+        browser_height - ntp_background->height() - height - border_width :
+  browser_height % ntp_background->height() - height - border_width -
+    ntp_background->height();
+
+  if (alignment & BrowserThemeProvider::ALIGN_LEFT) {
+    if (tiling == BrowserThemeProvider::REPEAT) {
+      canvas->TileImageInt(*ntp_background, 0, y_pos, width,
+                           2 * height + ntp_background->height() + 5);
+    } else if (tiling == BrowserThemeProvider::REPEAT_X) {
+      canvas->TileImageInt(*ntp_background, 0, y_pos, width,
+                           ntp_background->height());
+    } else if (tiling == BrowserThemeProvider::REPEAT_Y) {
+      canvas->TileImageInt(*ntp_background, 0, y_pos,
+                           ntp_background->width(),
+                           2 * height + ntp_background->height() + 5);
+    } else {
+      canvas->TileImageInt(*ntp_background, 0, y_pos, ntp_background->width(),
+                           ntp_background->height());
+    }
+  } else if (alignment & BrowserThemeProvider::ALIGN_RIGHT) {
+    int x_pos = width % ntp_background->width() - ntp_background->width();
+    if (tiling == BrowserThemeProvider::REPEAT) {
+      canvas->TileImageInt(*ntp_background, x_pos, y_pos,
+                           width + ntp_background->width(),
+                           2 * height + ntp_background->height() + 5);
+    } else if (tiling == BrowserThemeProvider::REPEAT_X) {
+      canvas->TileImageInt(*ntp_background, x_pos, y_pos,
+          width + ntp_background->width(), ntp_background->height());
+    } else if (tiling == BrowserThemeProvider::REPEAT_Y) {
+      canvas->TileImageInt(*ntp_background, width - ntp_background->width(),
+                             y_pos, ntp_background->width(),
+                             2 * height + ntp_background->height() + 5);
+    } else {
+      canvas->TileImageInt(*ntp_background, width - ntp_background->width(),
+          y_pos, ntp_background->width(), ntp_background->height());
+    }
+  } else {  // ALIGN == CENTER
+    int x_pos = width > ntp_background->width() ?
+                ((width / 2 - ntp_background->width() / 2) %
+                    ntp_background->width()) - ntp_background->width() :
+                width / 2 - ntp_background->width() / 2;
+    if (tiling == BrowserThemeProvider::REPEAT) {
+      canvas->TileImageInt(*ntp_background, x_pos, y_pos,
+                           width + ntp_background->width(),
+                           2 * height + ntp_background->height() + 5);
+    } else if (tiling == BrowserThemeProvider::REPEAT_X) {
+      canvas->TileImageInt(*ntp_background, x_pos, y_pos,
+          width + ntp_background->width(), ntp_background->height());
+    } else if (tiling == BrowserThemeProvider::REPEAT_Y) {
+      canvas->TileImageInt(*ntp_background,
+                           width / 2 - ntp_background->width() / 2,
+                           y_pos, ntp_background->width(),
+                           2 * height + ntp_background->height() + 5);
+    } else {
+      canvas->TileImageInt(*ntp_background,
+          width / 2 - ntp_background->width() / 2,
+          y_pos, ntp_background->width(), ntp_background->height());
+    }
+  }
+}